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1 /*
2  * Copyright 2009-2012 Niels Provos and Nick Mathewson
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  * 4. The name of the author may not be used to endorse or promote products
13  *    derived from this software without specific prior written permission.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  */
27 
28 /* for EVUTIL_ERR_CONNECT_RETRIABLE macro */
29 #include "util-internal.h"
30 
31 #include <sys/types.h>
32 #ifdef _WIN32
33 #include <winsock2.h>
34 #else
35 #include <sys/socket.h>
36 #include <netinet/in.h>
37 # ifdef _XOPEN_SOURCE_EXTENDED
38 #  include <arpa/inet.h>
39 # endif
40 #endif
41 #include <stdlib.h>
42 #include <string.h>
43 #include <errno.h>
44 
45 #include "event2/event.h"
46 #include "event2/bufferevent.h"
47 #include "event2/buffer.h"
48 #include "event2/util.h"
49 
50 const char *resource = NULL;
51 struct event_base *base = NULL;
52 
53 int total_n_handled = 0;
54 int total_n_errors = 0;
55 int total_n_launched = 0;
56 size_t total_n_bytes = 0;
57 struct timeval total_time = {0,0};
58 int n_errors = 0;
59 
60 const int PARALLELISM = 200;
61 const int N_REQUESTS = 20000;
62 
63 struct request_info {
64 	size_t n_read;
65 	struct timeval started;
66 };
67 
68 static int launch_request(void);
69 static void readcb(struct bufferevent *b, void *arg);
70 static void errorcb(struct bufferevent *b, short what, void *arg);
71 
72 static void
readcb(struct bufferevent * b,void * arg)73 readcb(struct bufferevent *b, void *arg)
74 {
75 	struct request_info *ri = arg;
76 	struct evbuffer *input = bufferevent_get_input(b);
77 	size_t n = evbuffer_get_length(input);
78 
79 	ri->n_read += n;
80 	evbuffer_drain(input, n);
81 }
82 
83 static void
errorcb(struct bufferevent * b,short what,void * arg)84 errorcb(struct bufferevent *b, short what, void *arg)
85 {
86 	struct request_info *ri = arg;
87 	struct timeval now, diff;
88 	if (what & BEV_EVENT_EOF) {
89 		++total_n_handled;
90 		total_n_bytes += ri->n_read;
91 		evutil_gettimeofday(&now, NULL);
92 		evutil_timersub(&now, &ri->started, &diff);
93 		evutil_timeradd(&diff, &total_time, &total_time);
94 
95 		if (total_n_handled && (total_n_handled%1000)==0)
96 			printf("%d requests done\n",total_n_handled);
97 
98 		if (total_n_launched < N_REQUESTS) {
99 			if (launch_request() < 0)
100 				perror("Can't launch");
101 		}
102 	} else {
103 		++total_n_errors;
104 		perror("Unexpected error");
105 	}
106 
107 	bufferevent_setcb(b, NULL, NULL, NULL, NULL);
108 	free(ri);
109 	bufferevent_disable(b, EV_READ|EV_WRITE);
110 	bufferevent_free(b);
111 }
112 
113 static void
frob_socket(evutil_socket_t sock)114 frob_socket(evutil_socket_t sock)
115 {
116 #ifdef HAVE_SO_LINGER
117 	struct linger l;
118 #endif
119 	int one = 1;
120 	if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void*)&one, sizeof(one))<0)
121 		perror("setsockopt(SO_REUSEADDR)");
122 #ifdef HAVE_SO_LINGER
123 	l.l_onoff = 1;
124 	l.l_linger = 0;
125 	if (setsockopt(sock, SOL_SOCKET, SO_LINGER, (void*)&l, sizeof(l))<0)
126 		perror("setsockopt(SO_LINGER)");
127 #endif
128 }
129 
130 static int
launch_request(void)131 launch_request(void)
132 {
133 	evutil_socket_t sock;
134 	struct sockaddr_in sin;
135 	struct bufferevent *b;
136 
137 	struct request_info *ri;
138 
139 	memset(&sin, 0, sizeof(sin));
140 
141 	++total_n_launched;
142 
143 	sin.sin_family = AF_INET;
144 	sin.sin_addr.s_addr = htonl(0x7f000001);
145 	sin.sin_port = htons(8080);
146 	if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
147 		return -1;
148 	if (evutil_make_socket_nonblocking(sock) < 0) {
149 		evutil_closesocket(sock);
150 		return -1;
151 	}
152 	frob_socket(sock);
153 	if (connect(sock, (struct sockaddr*)&sin, sizeof(sin)) < 0) {
154 		int e = evutil_socket_geterror(sock);
155 		if (! EVUTIL_ERR_CONNECT_RETRIABLE(e)) {
156 			evutil_closesocket(sock);
157 			return -1;
158 		}
159 	}
160 
161 	ri = malloc(sizeof(*ri));
162 	ri->n_read = 0;
163 	evutil_gettimeofday(&ri->started, NULL);
164 
165 	b = bufferevent_socket_new(base, sock, BEV_OPT_CLOSE_ON_FREE);
166 
167 	bufferevent_setcb(b, readcb, NULL, errorcb, ri);
168 	bufferevent_enable(b, EV_READ|EV_WRITE);
169 
170 	evbuffer_add_printf(bufferevent_get_output(b),
171 	    "GET %s HTTP/1.0\r\n\r\n", resource);
172 
173 	return 0;
174 }
175 
176 
177 int
main(int argc,char ** argv)178 main(int argc, char **argv)
179 {
180 	int i;
181 	struct timeval start, end, total;
182 	long long usec;
183 	double throughput;
184 
185 #ifdef _WIN32
186 	WSADATA WSAData;
187 	WSAStartup(0x101, &WSAData);
188 #endif
189 
190 	resource = "/ref";
191 
192 	setvbuf(stdout, NULL, _IONBF, 0);
193 
194 	base = event_base_new();
195 
196 	for (i=0; i < PARALLELISM; ++i) {
197 		if (launch_request() < 0)
198 			perror("launch");
199 	}
200 
201 	evutil_gettimeofday(&start, NULL);
202 
203 	event_base_dispatch(base);
204 
205 	evutil_gettimeofday(&end, NULL);
206 	evutil_timersub(&end, &start, &total);
207 	usec = total_time.tv_sec * (long long)1000000 + total_time.tv_usec;
208 
209 	if (!total_n_handled) {
210 		puts("Nothing worked.  You probably did something dumb.");
211 		return 0;
212 	}
213 
214 
215 	throughput = total_n_handled /
216 	    (total.tv_sec+ ((double)total.tv_usec)/1000000.0);
217 
218 #ifdef _WIN32
219 #define I64_FMT "%I64d"
220 #define I64_TYP __int64
221 #else
222 #define I64_FMT "%lld"
223 #define I64_TYP long long int
224 #endif
225 
226 	printf("\n%d requests in %d.%06d sec. (%.2f throughput)\n"
227 	    "Each took about %.02f msec latency\n"
228 	    I64_FMT "bytes read. %d errors.\n",
229 	    total_n_handled,
230 	    (int)total.tv_sec, (int)total.tv_usec,
231 	    throughput,
232 	    (double)(usec/1000) / total_n_handled,
233 	    (I64_TYP)total_n_bytes, n_errors);
234 
235 #ifdef _WIN32
236 	WSACleanup();
237 #endif
238 
239 	return 0;
240 }
241